A white-collar worker who has just been fired prepares his departure resentfully. At the same time, a mysterious virus breaks out, turning every co-worker into a bloodthirsty infected threat …

A friendly and hyperactive filmmaker, American Joe Lynch (Everly) is back with this great claustrophobic movie, with the likes of a Die Hard zombie flick whose energy and ingenuity transcend the limits of a modest budget. As well as ensuring the show from a gore and black humor perspective, Mayhem also offers a cast led by the charismatic Steven Yeun (a perfect John McLane) and Dallas Roberts (Sisters), amazing in the role of a ruthless boss overwhelmed by the events.